package com.atguigu.gulimall.ware.listener;

import com.atguigu.common.to.OrderTo;
import com.atguigu.common.to.mq.StockLockedTo;
import com.atguigu.gulimall.ware.service.WareSkuService;
import com.rabbitmq.client.Channel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;

import java.io.IOException;


/**
 * @Author: fd
 * @Date 2021/9/16 16:50
 * @Description:
 */
@Slf4j
@RabbitListener(queues = "stock.release.stock.queue")
@Service
public class StockReleaseListener {

	private final WareSkuService wareSkuService;

	public StockReleaseListener(WareSkuService wareSkuService) {
		this.wareSkuService = wareSkuService;
	}

	/**
	 * 1、库存自动解锁
	 *  下订单成功，库存锁定成功，接下来的业务调用失败，导致订单回滚。之前锁定的库存就要自动解锁
	 * 2、订单失败
	 *   库存锁定失败
	 *   只要解锁库存的消息失败，一定要告诉服务解锁失败
	 */
	@RabbitHandler
	public void handleStockLockedRelease(StockLockedTo to, Message message, Channel channel) throws IOException {
		log.info("******收到解锁库存的信息******");
		try {
			//当前消息是否被第二次及以后（重新）派发过来了
			// Boolean redelivered = message.getMessageProperties().getRedelivered();
			//解锁库存
			wareSkuService.unlockStock(to);
			// 手动删除消息
			channel.basicAck(message.getMessageProperties().getDeliveryTag(),false);
		} catch (Exception e) {
			// 解锁失败 将消息重新放回队列，让别人消费
			channel.basicReject(message.getMessageProperties().getDeliveryTag(),true);
		}
	}

	@RabbitHandler
	public void handleOrderCloseRelease(OrderTo orderTo, Message message, Channel channel) throws IOException {
		log.info("******收到订单关闭，准备解锁库存的信息******");
		try {
			wareSkuService.unlockStock(orderTo);
			// 手动删除消息
			channel.basicAck(message.getMessageProperties().getDeliveryTag(),false);
		} catch (Exception e) {
			// 解锁失败 将消息重新放回队列，让别人消费
			channel.basicReject(message.getMessageProperties().getDeliveryTag(),true);
		}
	}


}

